Title :
Improvements in the beam-wave theory of the open resonator
Author_Institution :
University College London, Department of Electronic & Electrical Engineering, London, UK
Abstract :
It is shown that electromagnetic perturbation theory can be used to improve the well known beam-wave formula for the resonance frequency of an open resonator. A simple case has been worked out in detail. A connection between the perturbation method and a variational formula is indicated.
Keywords :
laser cavity resonators; beam wave theory; electromagnetic perturbation theory; open resonator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19750263
